---
id: error-codes
title: Critical Error Codes
sidebar_label: Error Codes
sidebar_position: 4
---

The device might report these fault codes on the screen, but it will also be outputted on the device serial output. If you encounter a fault code, please post on the forum and we'll try to help.

:::note
This table is derived from the [protobufs](https://buf.build/meshtastic/protobufs/docs/main:meshtastic#meshtastic.CriticalErrorCode)
:::

|             Name             | Number | Description                                                                                                                                                                               |
| :--------------------------: | :----: | :---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
|          TxWatchdog          |   1    | A software bug was detected while trying to send LoRa.                                                                                                                                    |
|        SleepEnterWait        |   2    | A software bug was detected on entry to sleep.                                                                                                                                            |
|           NoRadio            |   3    | No LoRa radio hardware could be found.                                                                                                                                                    |
|         Unspecified          |   4    | Not normally used.                                                                                                                                                                        |
|       UBloxInitFailed        |   5    | Failed while configuring a UBlox GPS.                                                                                                                                                     |
|           NoAXP192           |   6    | This board was expected to have a power management chip, but it is missing or broken.                                                                                                     |
|     InvalidRadioSetting      |   7    | The channel tried to set a radio setting not supported by this chipset; radio communication settings are now undefined.                                                                   |
|        TransmitFailed        |   8    | Radio transmit hardware failure. Data was sent to the radio chip, but it did not respond with an interrupt.                                                                               |
|           Brownout           |   9    | Main CPU voltage dropped below the minimum acceptable value.                                                                                                                              |
|        SX1262Failure         |   10   | Self-test of the SX1262 radio chip failed.                                                                                                                                                |
|         RadioSpiBug          |   11   | A failure (likely software, possibly hardware) was detected while sending packets. If this occurs on your board, please post in the forum to help us collect information to fix this bug. |
|  FlashCorruptionRecoverable  |   12   | Corruption was detected on the flash filesystem, but it was repaired.                                                                                                                     |
| FlashCorruptionUnrecoverable |   13   | Corruption was detected on the flash filesystem, and it could not be repaired. _Note: Your node will likely need reconfiguration upon the next reboot (e.g., loss of region code)._       |
